.box {
  height: 400px;
  width: 600px;
  position: relative;
}
.imgC {
  height: 100%;
  position: relative;
}
.imgC .itemImg {
  position: absolute;
  top: 0px;
  left: 0px;
  z-index: 0;
  opacity: 0;
  transition: opacity 0.5s;
}
.imgC .itemImg.active {
  opacity: 1;
  z-index: 1;
}
.imgC .itemImg,
.imgC .itemImg img {
  height: 100%;
  width: 100%;
}

.car-btn button {
  cursor: pointer;
  position: absolute;
  z-index: 2;
  width: 30px;
  height: 60px;
  color: #ffffff;
  font-size: 20px;
  line-height: 60px;
  justify-content: center;
  display: flex;
  background: rgba(0, 0, 0, 0.5);
  border: none;
  outline: none;
}
.car-btn button:hover {
  background: rgba(0, 0, 0, 0.8);
}
.car-btn .btn-prev {
  left: 0;
  top: calc(50% - 30px);
}
.car-btn .btn-next {
  right: 0;
  top: calc(50% - 30px);
}
.car-indicator {
  height: 20px;
  position: absolute;
  z-index: 3;
  bottom: 10px;
  display: flex;
  left: 50px;
  display: flex;
  align-items: center;
}

.car-indicator .indicator-item {
  display: block;
  height: 6px;
  width: 6px;
  border: 1px solid #ffffff;
  border-radius: 50%;
  margin-right: 10px;
  cursor: pointer;
}

.car-indicator .active {
  background-color: #ffffff;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.3);
}
